These categories include WNT (WNT1, WNT3A, WNT6, AXIN2, TNF2, MMP7), Alzheimer disease presenilin (WNT1, WNT3A, WNT6, MMP7), cadherin (WNT1, WNT3A, WNT6) and Notch (LFNG, HES1) signaling pathways. The gene discussed is MMP7; the disease is Alzheimer disease.